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Modified Cramer-Rao...
Modified Cramer-Rao Bound for Clock Recovery in the Presence of Self-Phase Modulation
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- Tan, Ahmet Serdar, 1982 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wymeersch, Henk, 1976 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johannisson, Pontus, 1976 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Agrell, Erik, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Karlsson, Magnus, 1967 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Andrekson, Peter, 1960 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2012
- 2012
- Engelska.
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Ingår i: Journal of Lightwave Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 0733-8724 .- 1558-2213. ; 30:16, s. 2556-2562
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Abstract
Ämnesord
Stäng
- We investigate the effect of nonlinear self-phase modulation (SPM) on clock recovery in long-haul coherent optical communication systems with low to moderate baud rates. We consider dual-polarization, multilevel quadrature amplitude modulation, and evaluate conventional timing estimators as well as a modified Cramer-Rao bound. As the latter is hard to compute in the presence of nonlinear channel impairments, we derive an approximate closed-form expression. Contrary to linear channel impairments, the nonlinear impairments can degrade the performance for higher input powers. In addition, the bounds exhibit oscillatory behavior due to the oscillations in the signal spectrum in the presence of SPM.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- coherent optical communication
- compensation
- Clock recovery
- optical-fibers
- probability
- amplifiers
- noise
- modified Cramer-Rao bound
- timing
- systems
- design
- fiber optics
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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